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Unfortunately for the Moree, Bingara and Wee Waa area, where major flooding occurred last week, it looks like being one of the wettest areas in the state again this week.

Between tomorrow and Thursday, 20 to 50mm of rain is likely. Some locations may get as much as 70mm, most likely west of Moree, in the Walgett area. This much rain will prolong flooding, keep some roads inaccessible and further devalue grain crops.

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For NSW generally, the heaviest rain this week will be over the ranges, slopes and coast. Most places, including Sydney, will get 15 to 30mm.

On the upside, this rain is increasing soil moisture and dam levels and is flowing down rivers across much of the Murray-Darling catchment.

Looking ahead, the first week of summer is looking fairly dry for western NSW.

For summer overall, the chances of above average rainfall are increased due to a developing weak La Nina pattern.